151 lines
5.6 KiB
C
151 lines
5.6 KiB
C
#ifndef SPI_ADIS16201_H_
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#define SPI_ADIS16201_H_
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#define ADIS16201_STARTUP_DELAY 220 /* ms */
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#define ADIS16201_READ_REG(a) a
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#define ADIS16201_WRITE_REG(a) ((a) | 0x80)
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#define ADIS16201_FLASH_CNT 0x00 /* Flash memory write count */
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#define ADIS16201_SUPPLY_OUT 0x02 /* Output, power supply */
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#define ADIS16201_XACCL_OUT 0x04 /* Output, x-axis accelerometer */
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#define ADIS16201_YACCL_OUT 0x06 /* Output, y-axis accelerometer */
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#define ADIS16201_AUX_ADC 0x08 /* Output, auxiliary ADC input */
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#define ADIS16201_TEMP_OUT 0x0A /* Output, temperature */
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#define ADIS16201_XINCL_OUT 0x0C /* Output, x-axis inclination */
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#define ADIS16201_YINCL_OUT 0x0E /* Output, y-axis inclination */
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#define ADIS16201_XACCL_OFFS 0x10 /* Calibration, x-axis acceleration offset */
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#define ADIS16201_YACCL_OFFS 0x12 /* Calibration, y-axis acceleration offset */
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#define ADIS16201_XACCL_SCALE 0x14 /* x-axis acceleration scale factor */
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#define ADIS16201_YACCL_SCALE 0x16 /* y-axis acceleration scale factor */
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#define ADIS16201_XINCL_OFFS 0x18 /* Calibration, x-axis inclination offset */
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#define ADIS16201_YINCL_OFFS 0x1A /* Calibration, y-axis inclination offset */
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#define ADIS16201_XINCL_SCALE 0x1C /* x-axis inclination scale factor */
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#define ADIS16201_YINCL_SCALE 0x1E /* y-axis inclination scale factor */
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#define ADIS16201_ALM_MAG1 0x20 /* Alarm 1 amplitude threshold */
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#define ADIS16201_ALM_MAG2 0x22 /* Alarm 2 amplitude threshold */
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#define ADIS16201_ALM_SMPL1 0x24 /* Alarm 1, sample period */
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#define ADIS16201_ALM_SMPL2 0x26 /* Alarm 2, sample period */
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#define ADIS16201_ALM_CTRL 0x28 /* Alarm control */
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#define ADIS16201_AUX_DAC 0x30 /* Auxiliary DAC data */
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#define ADIS16201_GPIO_CTRL 0x32 /* General-purpose digital input/output control */
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#define ADIS16201_MSC_CTRL 0x34 /* Miscellaneous control */
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#define ADIS16201_SMPL_PRD 0x36 /* Internal sample period (rate) control */
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#define ADIS16201_AVG_CNT 0x38 /* Operation, filter configuration */
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#define ADIS16201_SLP_CNT 0x3A /* Operation, sleep mode control */
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#define ADIS16201_DIAG_STAT 0x3C /* Diagnostics, system status register */
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#define ADIS16201_GLOB_CMD 0x3E /* Operation, system command register */
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#define ADIS16201_OUTPUTS 7
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/* MSC_CTRL */
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#define ADIS16201_MSC_CTRL_SELF_TEST_EN (1 << 8) /* Self-test enable */
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#define ADIS16201_MSC_CTRL_DATA_RDY_EN (1 << 2) /* Data-ready enable: 1 = enabled, 0 = disabled */
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#define ADIS16201_MSC_CTRL_ACTIVE_HIGH (1 << 1) /* Data-ready polarity: 1 = active high, 0 = active low */
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#define ADIS16201_MSC_CTRL_DATA_RDY_DIO1 (1 << 0) /* Data-ready line selection: 1 = DIO1, 0 = DIO0 */
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/* DIAG_STAT */
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#define ADIS16201_DIAG_STAT_ALARM2 (1<<9) /* Alarm 2 status: 1 = alarm active, 0 = alarm inactive */
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#define ADIS16201_DIAG_STAT_ALARM1 (1<<8) /* Alarm 1 status: 1 = alarm active, 0 = alarm inactive */
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#define ADIS16201_DIAG_STAT_SPI_FAIL (1<<3) /* SPI communications failure */
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#define ADIS16201_DIAG_STAT_FLASH_UPT (1<<2) /* Flash update failure */
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#define ADIS16201_DIAG_STAT_POWER_HIGH (1<<1) /* Power supply above 3.625 V */
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#define ADIS16201_DIAG_STAT_POWER_LOW (1<<0) /* Power supply below 3.15 V */
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/* GLOB_CMD */
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#define ADIS16201_GLOB_CMD_SW_RESET (1<<7)
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#define ADIS16201_GLOB_CMD_FACTORY_CAL (1<<1)
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#define ADIS16201_MAX_TX 14
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#define ADIS16201_MAX_RX 14
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#define ADIS16201_ERROR_ACTIVE (1<<14)
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/**
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* struct adis16201_state - device instance specific data
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* @us: actual spi_device
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* @work_trigger_to_ring: bh for triggered event handling
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* @inter: used to check if new interrupt has been triggered
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* @last_timestamp: passing timestamp from th to bh of interrupt handler
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* @indio_dev: industrial I/O device structure
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* @trig: data ready trigger registered with iio
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* @tx: transmit buffer
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* @rx: recieve buffer
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* @buf_lock: mutex to protect tx and rx
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**/
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struct adis16201_state {
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struct spi_device *us;
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struct work_struct work_trigger_to_ring;
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s64 last_timestamp;
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struct iio_dev *indio_dev;
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struct iio_trigger *trig;
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u8 *tx;
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u8 *rx;
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struct mutex buf_lock;
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};
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int adis16201_set_irq(struct device *dev, bool enable);
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#ifdef CONFIG_IIO_RING_BUFFER
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enum adis16201_scan {
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ADIS16201_SCAN_SUPPLY,
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ADIS16201_SCAN_ACC_X,
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ADIS16201_SCAN_ACC_Y,
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ADIS16201_SCAN_AUX_ADC,
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ADIS16201_SCAN_TEMP,
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ADIS16201_SCAN_INCLI_X,
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ADIS16201_SCAN_INCLI_Y,
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};
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void adis16201_remove_trigger(struct iio_dev *indio_dev);
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int adis16201_probe_trigger(struct iio_dev *indio_dev);
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ssize_t adis16201_read_data_from_ring(struct device *dev,
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struct device_attribute *attr,
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char *buf);
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int adis16201_configure_ring(struct iio_dev *indio_dev);
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void adis16201_unconfigure_ring(struct iio_dev *indio_dev);
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int adis16201_initialize_ring(struct iio_ring_buffer *ring);
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void adis16201_uninitialize_ring(struct iio_ring_buffer *ring);
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#else /* CONFIG_IIO_RING_BUFFER */
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static inline void adis16201_remove_trigger(struct iio_dev *indio_dev)
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{
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}
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static inline int adis16201_probe_trigger(struct iio_dev *indio_dev)
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{
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return 0;
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}
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static inline ssize_t
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adis16201_read_data_from_ring(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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return 0;
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}
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static int adis16201_configure_ring(struct iio_dev *indio_dev)
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{
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return 0;
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}
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static inline void adis16201_unconfigure_ring(struct iio_dev *indio_dev)
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{
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}
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static inline int adis16201_initialize_ring(struct iio_ring_buffer *ring)
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{
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return 0;
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}
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static inline void adis16201_uninitialize_ring(struct iio_ring_buffer *ring)
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{
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}
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#endif /* CONFIG_IIO_RING_BUFFER */
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#endif /* SPI_ADIS16201_H_ */
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